SuperPro's rear differential mount replaces the soft and fast-wearing OEM rubber mount. The 80A version found here is significantly more robust than the factory rubber units it replaces and significantly improves performance while retaining OEM levels of NVH isolation. This kit will hold up to significantly more power than stock from a durability standpoint but the moderate durometer choice does allow some deflection and impact absorption in the name of comfort and compliance. If you're willing to sacrifice a small amount of that isolation for greater performance or have or are planning a very high-powered build we recommend the SPF4857-90K version.